The Famicom/NES PPU’s Pass-Through Graphics Capability

🫧 Open on Bubbles It’s not well known (but is becoming better known) that the NES’s PPU graphics chip has an unutilized feature. It has a way to pipe graphics into it from another PPU, giving the two chips a combined output. The Famicom and NES both ground out the pins that would allow using this interesting feature, making it impossible to use without desoldering and some other changes, but Youtuber decrazyo performed the necessary modifications (5 minutes) and thus made a system capable of hardware parall